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https://issues.apache.org/jira/browse/PARQUET-1647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17768335#comment-17768335
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ASF GitHub Bot commented on PARQUET-1647:
-----------------------------------------
zhangjiashen commented on code in PR #1142:
URL: https://github.com/apache/parquet-mr/pull/1142#discussion_r1335131781
##########
parquet-column/src/main/java/org/apache/parquet/schema/PrimitiveComparator.java:
##########
@@ -276,4 +279,24 @@ public String toString() {
return "BINARY_AS_SIGNED_INTEGER_COMPARATOR";
}
};
+
+ /**
+ * This comparator is for comparing two float16 values represented in 2
bytes binary.
+ */
+ static final PrimitiveComparator<Binary> BINARY_AS_FLOAT16_COMPARATOR = new
BinaryComparator() {
Review Comment:
added a test for the comparator!
> [Java] support for Arrow's float16
> ----------------------------------
>
> Key: PARQUET-1647
> URL: https://issues.apache.org/jira/browse/PARQUET-1647
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-format, parquet-thrift
> Reporter: The Alchemist
> Priority: Minor
>
> h2. DESCRIPTION
>
> I'm wondering if there's any interest in supporting Arrow's {{float16}} type
> in Parquet.
> There seem to be one or two {{float16}} / {{halffloat}} tickets here (e.g.,
> PARQUET-1403) but nothing that speaks to adding half-float support to Parquet
> in-general.
>
> h2. PLANS
> I'm able to spend some time on this, if someone points me in the right
> direction.
>
> # Add the {{HALFFLOAT}} or {{FLOAT16}} enum (any preferred naming
> convention?) to
> [https://github.com/apache/parquet-format/blob/master/src/main/thrift/parquet.thrift#L32]
> # Add {{HALFFLOAT}} to {{org.apache.parquet.schema.PrimitiveType}}
> # Add {{HALFFLOAT}} support to
> {{org.apache.parquet.arrow.schema.SchemaConverter}}
> # Add encoding for new type at {{org.apache.parquet.column.Encoding}}
> # ??
> If anyone has any interest in this, pointers, or comments, they would be
> greatly appreciated!
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